By the end of the 21st century, scientists__________a cure for the common cold.
Đáp án B
Câu sử dụng thì tương lai hoàn thành vì có cụm từ “By the end of the 21st century”
Which of the followings is NOT an evidence of monitoring studying?
Our flight was delayed, but the plane finally _______shortly after midnight.
According to the passage, to learn new information, low-achieving students do NOT______.
Which of the followings is the flow of water from the ground to the surface?
I must take this watch to be repaired as it _________ over 20 minutes a day.